Jesus, Paul, and James on works

A woman posting on the Coming Home Network Forums writes:

i have an ongoing problem in that i am engaged to a man who believes in once saved, always saved and all we have to do is believe in Christ as our Lord and Savior....while i do that, i also believe that it matters what we do on this earth.

So does Jesus Christ:

"Why do you call me 'Lord, Lord,' and not do what I tell you?  Every one who comes to me and hears my words and does them, I will show you what he is like:  he is like a man building a house, who dug deep, and laid the foundation upon rock; and when a flood arose, the stream broke against that house, and could not shake it, because it had been well built.  But he who hears and does not do them is like a man who built a house on the ground without a foundation; against which the stream broke, and immediately it fell, and the ruin of that house was great." (Luke 6:46-49)

"My mother and my brothers are those who hear the word of God and do it." (Luke 8:21)

"I know your works; you have the name of being alive, and you are dead.  Awake, and strengthen what remains and is on the point of death, for I have not found your works perfect in the sight of my God." (Rev. 3:1-2)

"I know your works: you are neither cold nor hot. Would that you were cold or hot! So, because you are lukewarm, and neither cold nor hot, I will spew you out of my mouth." (Rev. 3:15-16)

So does St. Paul:

What you have learned and received and heard and seen in me, do; and the God of peace will be with you. (Phil 4:9)

So does St. James:

But be doers of the word, and not hearers only, deceiving yourselves. For if any one is a hearer of the word and not a doer, he is like a man who observes his natural face in a mirror; for he observes himself and goes away and at once forgets what he was like. (James 1:22-24)